All
2,068 | 20:35duration 20 minutes 35 seconds
續立體圖形與三角
ronson@hkecl.net
22,051 | 14:27duration 14 minutes 27 seconds
三角形 (中、英文字幕可供選擇)
11,284 | 14:44duration 14 minutes 44 seconds
角(度) (中文字幕可供選擇)
915 | 20:26duration 20 minutes 26 seconds
More about 3-D figures and Trigonometry (English…
More about 3-D figures and Trigonometry (English subtitles available)
1,365 | 14:59duration 14 minutes 59 seconds
圓的基本性質 (二) (配以中文字幕)
4,573 | 19:34duration 19 minutes 34 seconds
電和電路
14,000 | 14:52duration 14 minutes 52 seconds
奇妙的電
1,143 | 19:29duration 19 minutes 29 seconds
Electricity and Circuits (English subtitles…
Electricity and Circuits (English subtitles available)
開始和結束時間:
開始時間: